Thieves with box cutter rob Sydney shop

A woman has been threatened with a box cutter during a hold-up at a vitamin shop in Sydney's inner west.

Two thieves - one armed with the box cutter - entered the shop on Burwood Road, Burwood, about 7.45pm Monday, police said.

The robbers threatened a female staff member, 27, before taking off with cash from the shop.

The men were last seen running down nearby George Street.

Both thieves are described as Caucasian, 18 to 20-years-old, and 180cm tall.

Police want anyone with information on the robbery to come forward.